The word on the street is that Sony is trying to buy Ericsson’s 50% share in the joint venture, a share that Ericsson would be interested to sell, Manager-Magazin.de reports. If true, that would potentially turn Ericsson into a supplier for Sony’s phone division. It might be that both company have different opinions on what to do next and while we’re talking about wild speculations, why not imagine a PSP phone? As of late, Sony Ericsson posted a loss of $187M.